Polishing and cleaning machine



Nov. 22, 1927. 1,650,035

A. PETERSON POLISHING AND CLEANING MACHINE Filed Oct. 14. 1254 2ShOQtS-Shfiit 1 x a" 3 55 g 4 l I 62 6! eq 67 E j 60 68 4 44 4 irx' 3 KI! I/ ,1

4D 55 75 64 65 72 66 INVENTOR.

.fi'zlgust pezezasazz BY 3 0M *1 6314 i A TTORNEYJ I NW.- 22, 1921.1,650,035 v 4. PETERSON POLISHING AND CLEANING ucunua Filed Oct. 14.1924 2 Sheets-Shoot 2 INVEN TOR. fiz gust Fezzrsozz ATTORNEY. l

Patented Nov. 22, 1927.

UNITED STATES AUGUST PETERSON, OF CLEVELAND, OHIO.

POLISHING AND CLEANING MACHINE.

Application filed October 14, 1924. Serial No. 743,556.

This invention relates to a polishing and cleaning machine. Moreparticularly it comprises a portable device carrying a rotary memberwith a fixed lower face, one side of which is brought into contact withthe work operated upon. The disc may itself be an abrading or polishingelement but preferably separate means, such as wires,

ristles or emery cloth, are applied to the face of said disc andreplaced whenever necessary.

Heretofore polishing machines of a portable character have been knownbut in many such devices the polishing elements make full and directcontact with the work operated on and exact control of the operation issomewhat diflicult.

The principal object of the present invention is to provide an improvedtype of polishing and cleaning machine and one wherein the operation ofthe machine may be accurately adjusted as desired. A further object ofthe invention is to provide an improved type of abrading or cleaningelement and one which is readily replaceable. Another object of theinvention isto provide a most simple form of wire brush abrading devicefor use in the polishing and cleaning machine. Other and further objectsof-the invention will appear in the course of the following description.To the accomplishment of the foregoing and related ends, said invention,then, consists of the means hereinafter fully described and particularlypointed out in the claims.

The annexed drawings and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.-

In said annexed drawings Fig. 1 is a bottom plan View showing one formof the im roved polishing and cleaning machine em odying the invention;Fig. 2 IS a transverse sectional view taken along the line 2-2 shown inFig. 1 looking in the direction of the arrows; Fig. 3 is a transversesectional view similar to Fig. 2 but showing a modified form of rotatingelement; and Fig. 4 is an enlarged detail view taken along the line Hshown in Fig. 2 looking in the direction of the arrows, showing themethod of mounting the cutter pin abrading elements in position upon thedisc.

As is clearly shown in the drawing the apparatus comprises a casing 1 ofcylindrical form having a closed lower end 2 suitably apertured toprovide a journal for the spindle 3 upon which the rotary member or disc4 carrying the polishing or cleaning elements is mounted. At its innerend the spindle is provided with a gear 5. Said gear is shown as beingintegrally formed with said spindle and an axial counter bore 6 isprovided to receive a bushing 7, within which one end of the drive shaft8 of a motor 9 is adapted to be received. The motor may be driven by anysuitable power, such as air or electric power. A small driving gear 11is keyed to the motor shaft immediately above the gear of said spindleand through an intermediate reducing gear 12 serves to transmit power ata slower rate to the main spindle of the apparatus. The reducing gear 12is carried upon a stub axle 13 mounted in the end wall of the casingwhich is provided with an enlar ement 14 at one side of the axial linethereof? The reducing gear is so plied with a suitable bushing 15 and ishe d in position by means of a washer 16 and cotter pin 17 ofconventional form. v

The central spindle is journaled in a bushing 21 and a thrust bearing isprovided adjacent its lower end. Said thrust bearing comprises a pair ofball races 22, 23, within which ball bearings 24 are positioned. The

adjacent portion of the spindle is screwthreaded to receive a pair ofadjusting nuts 25, 26, whereby any lost motion in the thrust hearing maybe taken up. The lower end of the spindle is provided with a ke waywithin which a key 31 is adapted to t and hold against rotation therotatable disc 4 which carries the polishing 0r abrading elements. Thelower end 32 of the spindle is formed of reduced diameter and isscrew-threaded to receive the locking nut 33 for the rotary member. Anextension casing 34 is adapted to be secured to the end wall of the maincasing l by means of a plurality of bolts 35 which connect the upperflange formed thereon with the circumferential portion of the lower endof the cylindrical casing. Said casing has an upper wall 36 which iscentrally apertured to provide clearance for the thrust bearingheretofore described. The circumferential portion of said casing isprovided with a downwardly extending flange 37 which forms a housing forthe rotary member or polishing disc 4 of the apparatus. Said housing isprovided with an enlarge- I other. Said lugs are provided with alignedapertures adapted to receive the upper end of a screw-threaded pin 43,the lower end of which is provided with a pair of rollers 44 carried ona transverse pin 40. A knurled adjustingnut 45 is adapted to be seatedbetween the spaced lugs and engaged upon the upper screw-threaded end ofthe roller. Through the rotation of the knurled nut the roller may beadjusted, thepin being held stationary during this operation.

At points on opposite sides of the extension casing where the enlargedhousing joins the cylindrical portion thereof, a pair of outwardlyextending bosses 46 is provided. Said bosses are provided with apertureswithin which pins 47 are screw threadedlyengaged, said pins serving assupports for rollers 48.

The apparatus thus far describedcovers the mechanism for producing therotary motion of the disc and holding the same in spaced relation withthe surface to be operated on. The upper end of the casing has not beenshown inthe drawing but Wlll be of a conventionalgform such as iscommonly used in connection with portable abrading machines and electrictools of similar character.

As has been stated, various forms of polishing and cleaning elements maybe used in connection with the apparatus but the two forms thereof shownin Figs. 2 and 3 have been found to be of particular effectiveness. Inthe form of construction shownin Fig. 2 the circumferential portion ofthe disc 4 which is of substantially even thickness and has a convexouter face and a concave inner face, is provided with a series ofapertures 51 passing entirely through said disc and arranged preferablyin radial rows 52, 53, the apertures in adjacent rows being staggeredwith respect to each other as is more clearly shown in Fig. 1. Withinsaid apertures abrading elements 54 in the form of cotter pins aredisposed, the eye 55 of each abrading element being preferably engagedby a wire 56 extending through an aperture 57 formed radially adjacentthe upper surface of said disc in alignment with each of said radialrows of transverse openings. A cover plate 58 is preferably secured tothe be received until opportunity is af- The lower por-- upper face ofthe disc by means of a series of screws 59.

Other means than the radial wires just described may be used to supportthe abrading elements. Thus thongs or flexible elements of othercharacter may be threaded through the eyes of a -plurality of saidelements and clamped against the upper face of said disc by means of thecover plate.

In the form of construction illustrated in Fig. 3 the disc 60 isprovided with an enlarged inwardly extending hub 61 which is held to thespindle 3 by means of a key 62. The outer portion of said disc isprovided with a countersunk recess 63 wherein the locking nut 64 holdingthe disc to the spindle may be received. Thus, the ential outer face65.0f the disc rojects beond the locking nut and may e brought intocontact with the surface to be operated upon. When constructed of propermaterial, the disc ittelf may be used as a polish-- ing or cleaningelement, but as shown in the drawing the outer surface is covered withsheet abrading material 66 such as emery cloth or sand paper. Such sheetmaterial may be clamped to the disc by means of a ring (37 fittingwithin a groove 68 formed on the upper surface of the disc, said ringbeing pressed against the edge of the material seated in said groove bymeans of a series of headed bolts 69. The sheet material adjacent thecountersunk recess 63 is held in firm contact with the outer face of thedisc by means of aring 71 pressed against said material by means of aseries of screws 72. Said ring and screws are received within a shallowgroove 73 surrounding the countersunk recess 63, said groove .being ofsuflicient depth to afford adequate.

clearance of the screw'heads beneath the working surface of the disc.

The operation of the device has alread. been indicated in part inconnection with the description of the construction. The device isparticularly suitable for use in polishing floors and when so utilizedis rolled into proper position and the adjustable wheel is set to permita light contact of one side of the working contacting element with thesurface of the floor. The motor is then started and the machine is movedback and forth across the floor to be polished or abraded until thedesired character of finish is produced.

The machine is by no means limited to use upon floors as it will also befound satisfactory for use upon various other types of work.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards themechanismherein disclosed, provided the means stated by any of thefollowing claims or the equivalent of such stated means be employed.

mounted below I therefore particularly point out and distinctly claim asmy invention 1. A motor casing havin a closed lower end provided with ajourna centrally there of, a vertical spindle mounted in said journal, athrust ball-bearing for said spindle said journal, adjusting means forsaid bearing carried on said spindle, a polishing wheel carried on saidspindle, a motor having a vertically disposed shaft, a bearing formed inthe end of said spindle and adapted to receive the end of said motorshaft in axial alinement therewith, and reducing gear supported by saidcasing and en a ing the gears on said motor shaft and spin le fortransmitting power from said motor shaft to said spindle and polishingwheel.

sion housing adjacent one side of said pol-' ishing wheel, providing achamber for receiving abraded material.

3. An apparatus of the character described having in combination acasing, a motor enclosed in said casing and having a verticallypositioned driving shaft, a spindle supported in said casing below saidmotor, a polishing wheel carried by said spindle, means for transmittingpower from said motor to said spindle, an extension casing secured tothe lower end of said motor casing and housing said polishing wheel, anenlargement provided in said extension housing adjacent one side of saidpolishing wheel, providing a chamber for receiving abraded material, androllers mounted on said housing.

4. 'An apparatus of the character described havin in combination acasing, a motor enclose in said casing andhaving a vertically positioneddriving shaft, a sp1n-,

dle supported in said casmg below said motor, a polishing wheel carriedby said spindle, means for transmitting power from said motor to saidspindle, an extension casing secured to the lower end of said motorcasing and housing said polishing wheel, an enlargement provided in saidextension housing adjacent one side of said polishin wheel, andremovable slide cooperating wit 1 said enlargement to provide a chamberfor receiving abraded material.

Signed by me this 11th day of October, 192

AUGUST PETERSON.

